I am not associated with Princeton head lights but I have 3 of them. They have lasted years until recently the battery doors broke. I called them and they sent me new ones no charge after several years of abuse. Work great when you are walking out on ice, looking for stuff in car, hunting etc .....
The life is also very good on 3 little AAA batteries
This is the one I have but the have several models - This is just info for anyone looking for a good headlamp with awesome warranty
This is a great site so I wanted to share this info
http://www.princetontec.com/fuel